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The lines radiating outward from (0,0,0) are geodesics, and the transverse "circles" are curves of constant geodesic parameter t .


Signature (+ - -)

The curves spiraling out and up from (0,0,0) are geodesics, and the transverse circles are curves of constant geodesic parameter t . From outside in, we have spacelike, null, and timelike geodesic surfaces, cut away to reveal their interiors. Thus less than one full period of each of these infinitely periodic surfaces is visible.


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The lines radiating outward from (0,0,0) are geodesics, and the transverse "circles" are curves of constant geodesic parameter t . Shown are the null "cone," three timelike (spacelike for relativists) and two spacelike (timelike for relativists) surfaces.


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